Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Atmosphere: 25400
US Standard Atmosphere 1976 — atmospheric properties by altitude from sub-sea to high altitude including temperature, pressure, density, viscosity, speed of sound, mean free path, and gravity
| altitude m | altitude ft (ft) | density kg m3 (kg/m3) | density lb ft3 (lb/ft3) | dynamic viscosity Pa s (Pa*s) | gravity m s2 (m/s2) | kinematic viscosity m2 s (m2/s) | model | pressure Pa (Pa) | pressure bar (bar) | pressure psi (psi) | speed of sound ft s (ft/s) | speed of sound m s (m/s) | temperature C | temperature F | temperature K | thermal conductivity W mK (W/mK) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25,400 | 83,333.34 | 0.037639 | 0.00235 | 0.000015 | 9.728748 | 0.000385 | US STD 1976 | 2,398.0352 | 0.02398 | 0.347806 | 979.8434 | 298.6563 | -51.2011 | -60.162 | 221.9489 | 0.01995 |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators